Development of long-term simulator for the large-scaled power system

Jihun Kim, B. Lee, Hwachang Song, Tae Kyun Kim, Su Chul Nam, Jeonghoon Shi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a development of program in long-term dynamic stability. The long-term voltage instability is caused by reactive-power reserves. The reactive-power reserve problems are especially determined by Over-excitation limiter(OXL) and Under Load Tap Changer(ULTC), etc., which are the power device having a few to 10's minutes of time periods. The previous method estimating Long-term voltage stability is the Full-time domain simulation. The Full time simulation methods can compute the exact results, but it may take an amount of time to simulate. And it may have the numerical error in long-term time scale. Thus, the alternative methods to calculate the appropriate results are needed. This paper deals with the Long-term voltage stability using Quasi-Steady-State (QSS) Analysis. QSS can provide good results and improve the speed of simulation. This fast time simulation method (QSS) assumes that the short-term dynamics or transient stability are stable after the contingency and can be replaced by their equilibrium equations. The concept of singular perturbation is applied on focus on long-term dynamics.

Original languageEnglish
Title of host publicationTransmission and Distribution Conference and Exposition
Subtitle of host publicationAsia and Pacific, T and D Asia 2009
DOIs
Publication statusPublished - 2009 Dec 16
EventTransmission and Distribution Conference and Exposition: Asia and Pacific, T and D Asia 2009 - Seoul, Korea, Republic of
Duration: 2009 Oct 262009 Oct 30

Publication series

NameTransmission and Distribution Conference and Exposition: Asia and Pacific, T and D Asia 2009

Other

OtherTransmission and Distribution Conference and Exposition: Asia and Pacific, T and D Asia 2009
CountryKorea, Republic of
CitySeoul
Period09/10/2609/10/30

Keywords

  • Long-term voltage stability
  • Over-excitation limiter (oxl)
  • Quasi-steady-state(qss)analysis,
  • Under-load tap changer(ultc)

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

Fingerprint Dive into the research topics of 'Development of long-term simulator for the large-scaled power system'. Together they form a unique fingerprint.

Cite this